Portable heater



FIG. 1 is an isometric view of a portable heater in a first operating position showing our new design;

FIG. 2 is a first side view of the portable heater of FIG. 1 in the first operating position, with the second side view of the portable heater in the first operating position being a mirror image of the first side view;

FIG. 3 is a front view of the portable heater of FIG. 1 in the first operating position;

FIG. 4 is a rear view of the portable heater of FIG. 1 in the first operating position;

FIG. 5 is a top view of the portable heater of FIG. 1 in the first operating position;

FIG. 6 is a bottom view of the portable heater of FIG. 1 in the first operating position;

FIG. 7 is an isometric view of the portable heater of FIG. 1 in a second operating position; and,

FIG. 8 is a first side view of the portable heater of FIG. 1 in the second operating position, with the second side view of the portable heater in the second operating position being a mirror image of the first side view.

The broken lines in the Figures depict portions of the portable heater that form no part of the claimed design. The broken lines in a dot-dash pattern represent borders between claimed and unclaimed surfaces, and themselves form no part of the claim. 

CLAIM The ornamental design for a portable heater, as shown and described. 